I set up a new oc instance and now I have problems syncing the contacts from oc 10.0.4 with iPhone 8 (iOS 11.2.6).
the phone does not sync all the contacts. I created 2 addressbooks. At oc all contacts are available. At the iPhone:
addressbook 1: 349 of 431
addressbook 2: 37 of 40
Thanks for your help.